<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <cpn><span slot="center">标题</span> </cpn>
</div>
<template id="cpn">
    <div>
        <slot name="left"><span>左边</span></slot>
        <slot name="center"><span>中间</span></slot>
        <slot name="right"><span>右边</span></slot>
    </div>
</template>
<script src="../js/vue.js"></script>
<script>
    let app = new Vue({
        el: '#app',
        data: {
            message: '123',
            name: '321',
        },
        components: {
            cpn: {
                template: `#cpn`,

            }
        }
    })
</script>
</body>
</html>